initial work toward api 26+

* introduce notification channels
* always use foreground service on 26+

3 files changed, 9 insertions, 2 deletions

diff --git a/src/main/java/de/pixart/messenger/ui/SettingsActivity.java b/src/main/java/de/pixart/messenger/ui/SettingsActivity.java
index 1ace03e5e..4bf9d26cc 100644
--- a/src/main/java/de/pixart/messenger/ui/SettingsActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/SettingsActivity.java
@@ -17,6 +17,7 @@ import android.preference.PreferenceCategory;
 import android.preference.PreferenceManager;
 import android.preference.PreferenceScreen;
 import android.support.annotation.NonNull;
+import android.support.v4.content.ContextCompat;
 import android.support.v7.app.AlertDialog;
 import android.util.Log;
 import android.view.LayoutInflater;
@@ -541,7 +542,7 @@ public class SettingsActivity extends XmppActivity implements
     }
 
     private void startExport() {
-        startService(new Intent(getApplicationContext(), ExportLogsService.class));
+        ContextCompat.startForegroundService(this, new Intent(this, ExportLogsService.class));
     }
 
     private void displayToast(final String msg) {
diff --git a/src/main/java/de/pixart/messenger/ui/SettingsFragment.java b/src/main/java/de/pixart/messenger/ui/SettingsFragment.java
index b40875f7c..ec4898f89 100644
--- a/src/main/java/de/pixart/messenger/ui/SettingsFragment.java
+++ b/src/main/java/de/pixart/messenger/ui/SettingsFragment.java
@@ -10,6 +10,7 @@ import android.text.TextUtils;
 
 import de.pixart.messenger.Config;
 import de.pixart.messenger.R;
+import de.pixart.messenger.utils.Compatibility;
 
 public class SettingsFragment extends PreferenceFragment {
 
@@ -30,6 +31,7 @@ public class SettingsFragment extends PreferenceFragment {
                 mCategory.removePreference(cleanPrivateStorage);
             }
         }
+        Compatibility.removeUnusedPreferences(this);
 
         if (!TextUtils.isEmpty(page)) {
             openPreferenceScreen(page);
diff --git a/src/main/java/de/pixart/messenger/ui/XmppActivity.java b/src/main/java/de/pixart/messenger/ui/XmppActivity.java
index 3ab6bfc6a..acb970e82 100644
--- a/src/main/java/de/pixart/messenger/ui/XmppActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/XmppActivity.java
@@ -536,7 +536,11 @@ public abstract class XmppActivity extends ActionBarActivity {
         intent.setAction(Intent.ACTION_SEND);
         intent.setData(uri);
         intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
-        startService(intent);
+        try {
+            startService(intent);
+        } catch (Exception e) {
+            Log.e(Config.LOGTAG, "unable to delegate uri permission", e);
+        }
     }
 
     protected void inviteToConversation(Conversation conversation) {